Professional technology
Strong professional, high reliability, high accuracy of test data, high cost performance, the instrument is equipped with high sensitivity hydrogen flame ionization detector (FID) and automatic ignition function.
The machine adopts the 7 inch touch screen LCD display, dynamic display vivid graphics display all instrument parameters, flexible combination of the injection system, the machine is equipped with a general injection interface, but also add interface protocol docking, convenient installation of automatic injector
The digital precision valve stabilizes the flow air path. The carrier gas adopts the mode of two-stage pressure stabilization and flow stabilization. The digital precision diaphragm controls the valve parts to ensure the reproducibility of the instrument air path
Gas pipeline and vacuum welding technology, the gas pipeline used in the instrument adopts non-cleaning stainless steel pipeline, to provide a dry and clean carrier for high purity gas, each section of pipe interface incision is neat, the instrument can work in high temperature all year round without being burned
The instrument has the function of low pressure carrier air path and air cutoff protection.
The instrument has the function of high temperature protection, any one way temperature control exceeds a certain range of set temperature (set value is 20℃), the instrument will power off protection stop operation and alarm.
The response signal can reach 1500mV wide range with good consistency
The software and hardware of the operation control system are designed, and the whole software monitoring of the system is automatically implemented during the operation of the instrument, so as to eliminate the out-of-control phenomenon of instrument temperature and operating parameters.
The signal output of the instrument can be easily connected with various chromatographic data processors and chromatographic workstations and other peripheral data processing equipment or plotting equipment.
Standard configuration special chromatographic network anti-control version workstation, can set all the numerical parameters of the instrument, control operation, two-way communication, two-way protection, human-machine interchange easy to use, intelligent data processing, processing function is powerful, can be based on standard samples, direct detection of all kinds of residual solvent in the output analysis object name content (ug/g), etc. It is convenient for test personnel to refer to the test standard for data analysis.
Test principle
Gas chromatograph is a kind of multi-component mixture separation, analysis tool, it is inert gas as mobile phase, using chromatographic column separation technology. When a variety of analytical substances enter the chromatographic column, due to the different distribution coefficient of each component in the chromatographic column, the flow rate of each component in the chromatographic column is different. After a certain column length, the mixed components leave the chromatographic column and enter the detector, which is converted into electrical signals after detection and sent to the data processing workstation, so as to complete the detection and analysis of the measured substances.
Test application
Basic application | Solvent residue | Suitable for all kinds of food, medicine packaging plastic film, paper and plastic composite film, cigarette bag and other materials solvent residue analysis test |
Purity analysis | Suitable for all kinds of packaging printing solvent purity analysis |
Moisture analysis | It is suitable for solvent moisture content analysis in packaging and printing industry |
Automatic sampling | It can realize the automatic experiment process and reduce the human error |
Extended application | Vinyl chloride monomer analysis | Suitable for the content analysis of vinyl chloride monomer |
Technical index
Column chamber temperature | Temperature control range | Room temperature +8℃ ~ 450℃ |
Temperature control accuracy | Better than ±0.1℃ |
Temperature gradient | Column effective area is not greater than 2% |
Temperature deviation | The deviation between the set temperature and the displayed temperature is less than 1 ° C |
Temperature deviation | The deviation between the set temperature and the actual temperature is no more than 2% |
Program temperature order | 16th order |
Heating rate | 0.1～40℃/min |
Linear program temperature range |
Below 150℃ per minute at 30℃; Lower than 300℃ at 15℃ per minute; Lower than 350℃ at 10℃ per minute; |
Initial temperature and final temperature control time | 0～600 min |
Repeatability of program heating | Not more than 2% |
Cooling rate | It takes no more than 15 min to decrease from 300℃ to 50℃ |
Gasification chamber | Temperature control accuracy | ±0.1℃ (room temperature +15℃ ~ 200℃) |
±0.2℃ above 200℃ |
Test room | Temperature control accuracy | ±0.1℃ (room temperature +15℃ ~ 200℃) |
±0.2℃ above 200℃ |
Hydrogen flame ion detector (FID) | Detection limit | Not more than 5×10-12g/s(benzene) |
noise | No more than 0.020 mV |
drift | No more than 0.15mV /h |
host | Power supply | AC 220V 50Hz |
Overall dimension | 595mm (L) × 495 mm (W) × 480 mm (H) |
Main engine weight | 55 kg |
Communication interface | Ethernet, IE 802.3 |
Product configuration
Standard configuration:
Gas chromatograph host, hydrogen flame detector, ethylene oxide analysis column, chromatographic workstation
Remarks:
Air source (high purity nitrogen, high purity hydrogen, dry, oil-free air), 20ml headspace bottle with pliers (with bottle cap, sealing pad, sealing pliers), 1mL glass syringe (with a No.5 needle), computer (with serial port) by the user.
